national polls show the white house race tight, but president obama leads in the battle states. last night in denver, romney slammed the president's record. >> it is very clear, we can't afford four more years like the last four years, that's why we are going to get change, finally in washington the people in america deserve. >> reporter: when romney arrives in ohio tomorrow he will be greeted by a new tv ad from the obama campaign attacking him for saying 47% of americans are dependent on the government and view themselves as victims. >> doesn't the president have to worry about everyone? >> reporter: as the campaign steps up efforts some in romney's party worry the race is slipping away. >> their core problem was carefulness, inability to focus on their own essential meaning. >> reporter: president obama will be in new york today and tomorrow for the united nations general assembly. last night on "60 minutes" mr. obama said his biggest disappointment is he hasn't changed the climate in washington. >> the president: i'm hoping after the smoke clears and the election season is o